Senior Product Engineer

Overview

Kombo (YC S22) is building a unified API that saves engineering teams, on average, hundreds of hours by needing to integrate only one API instead of 50+. We’re looking for a product-minded full-stack engineer to potentially own one of our existing or new product verticals and to build features for our rapidly growing customer base. This is a Berlin-based onsite role (4+ days/week).

Kombo is building the unified API for HR, payroll, and recruiting systems. Instead of companies spending months integrating with dozens of different systems, they can integrate once with Kombo and instantly connect to over a hundred platforms. We abstract away the complexity of handling different data schemas, authentication methods, and API quirks.

Since going through Y Combinator in 2022, we:

• Grew from zero revenue to $8M+ ARR and hundreds of customers in 24 months (growth-wise among the top-5% of VC-backed startups)
• Scaled to process data for the equivalent of 10% of Germany's workforce
• Raised $8M+ of funding from Y Combinator, 468 Capital and other top-tier investors
• Grew to a team of 45+ Kombies

As a Senior Product Engineer, you’ll take full ownership of major product areas —
architecting our product, working closely with customers
, and shipping high-impact features end-to-end.

Projects you would have worked on in the past:

• Building and iterating on a ‘filtering’ layer that allows customers to filter the employees being sent to us after discovering that building this in-house is the #1 blocker for their implementation
• (De)-validating a LLM-based approach to building integrations more efficiently in a few-week PoC
• Allowing customers to receive real-time data by extending our integration framework & infrastructure to handle millions of webhooks per day

Stack: Type Script (required), Node.js, React, Postgre

SQL, GCP, Docker, Prisma.

You don’t need to know everything — we value strong fundamentals and learning velocity.

You're joining at a critical time. We've proven strong product-market fit and our biggest problem is keeping up with customer demand
. This means:

• You'll build features that customers actively request and start using the same day - we often get "when can we have this?" messages within hours of releasing new features
• Identify and solve problems without bureaucracy — we release 20+ times per day and move fast
• Operate in a high-growth environment (2–3× per year) that feels like a new company every few months

We hire entrepreneurial engineers who want to move fast and maintain a high bar for quality
.

On a high level, we are looking for entrepreneurial people that are at the top-of-their-game. People at Kombo come from Harvard, Oxford, Stanford, CODE etc., 50% are ex-founders themselves and in general have always done hard, impressive things. Specifically for this role, we are looking for the following skills:

• Expertise in designing B2B Software applications
• Ideally 5-8+ years of software development experience
• Proficiency or capacity to learn our tech stack:
  Node.js, React, Postgres, Prisma, Type Script
• Enthusiastic and collaborative work attitude
• Previous experience leading a team is a plus!
• Previous founding experience is a plus!

This role is perfect for an experienced engineer looking to join a company that has already proven product-market fit but is still in its early days. You are likely a great fit, if:

• You thrive when you have autonomy, own as many of the details as possible, and project manage your own work
• You have strong engineering fundamentals, code efficiently, and you know what you're great at and what you're less great at
• You dislike meetings and would much rather focus your time on building, being productive, and shipping code
• Location: This is a Berlin-based onsite role — we believe the best ideas happen together, in person.

Note that while we are rather looking for senior candidates at the moment, we are open to various levels of experience, and if in doubt, please apply :)

Our culture is built around two pillars: high ambition (and thus high-performance) while still providing a fun and supportive…